Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

The more you take me, the more you leave me behind.
Who Am I?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

I add 5 to 9 and get 2. The answer is correct, so what am I?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Distances from you to certain cities are written below.

BERLIN 200 miles

PARIS 300 miles

ROME 400 milesAMSTERDAM 300 miles

CARDIFF ??? miles

How far should it be to Cardiff ?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?